Lots of questions on that, no real answers as yet. Would be interesting to note what the case alloy actually is, and how it responds to things like temperature and corrosion. That's a lot of horsepower right next to your face, and it's an interesting concept. Deliberately taking a rifle past it's designed maximum chamber pressure with a set technology and into the danger zone, by substituting materials in the consumable bit.
I would suspect that there won't be many people to be lining up to rechamber an existing rifle in the caliber that's for sure.
Not sure I'm a fan of the steel case tech, as steel cases are not reloadable at the home user level. The material is not easy to work with and for the standard reloading equipment you can't swage it (resize) to get the case to successfully grip the next bullet. Someone will work out a way to reuse another caliber brass case to reduce the costs of shooting the new chambering at a lower performance level 'backwards improving' it!
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